Question

Transfer characteristics [output voltage (V₀) vs input voltage (V_i)] for a base biased transistor in CE configuration is as shown in the figure. For using transistor as a switch, it is used

(a) in region III 

(b) both in region (I) and (II) 

(c) in region II 

(d) in region I

Answer 1

The correct option is (b) both in region (I) and (II).

Explanation:

In the given graph, 

Region (l) Cutoff region 

Region (lI) - Active region 

Region (lll)- Saturation region

Using transistor as a switch it is used in cutoff region or saturation region. 

Using transistor as a amplifier it is used in active region.